Cost of Server Transfers

[Sinth]

I'm aware and grateful for the free week of transfers. Can you explain to me how it helps in any way aside from providing SE with additional income?

It prevents the practice of buying cheap in one market and selling high in another. So, for instance, philo items are selling for 50k on Lamia, but only 25k on Leviathan. Someone on Leviathan can buy 500k worth of philo mats, transfer to Lamia, double their money and transfer back.

Transfer costs prevent world-market exploitation.